The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 1992
Filed:
Sep. 05, 1990
Applicant:
Inventors:
Eugene M Van Kruchten, Amsterdam, NL;
Gerardus W Heimerikx, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C10M / ;
U.S. Cl.
CPC ...
252 / ; 252 25 ; 564177 ;
Abstract
The invention provides oil-soluble multivalent metal ion salts of a compound of the formula XNR.sup.1 R.sup.2, in which R.sup.1 and R.sup.2 are the same or different and each are selected from hydrogen and hydrocarbon based radicals having from 1 to 30 carbon atoms, X is an acyl radical of an aromatic ortho-hydroxy carbozxyic acid having a ring substituent which is a hydrocarbon based radical having at least 4 carbon atoms, a process for their preparation, and their use, as additives, in lubricating oils.